Use the media galleries controller interface for the scan result dialog.

chrome/browser/media_galleries/media_galleries_dialog_controller.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_DIALOG_CONTROLLER_H_
 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_DIALOG_CONTROLLER_H_
 
 #include <vector>
 
 #include "base/strings/string16.h"
@@ skipping 13 matching lines @@
 class MediaGalleriesDialog {
  public:
   virtual ~MediaGalleriesDialog();
 
   // Tell the dialog to update its display list of galleries.
   virtual void UpdateGalleries() = 0;
 
   // Constructs a platform-specific dialog owned and controlled by |controller|.
   static MediaGalleriesDialog* Create(
       MediaGalleriesDialogController* controller);
+ private:
+  friend class TestMediaGalleriesAddScanResultsFunction;
+
+  virtual void AcceptDialogForTesting() = 0;
 };
 
 // Multiple dialog controllers are based on this interface.
 // Implementations of this controller interface are responsible for handling
 // the logic of the dialog and interfacing with the model (i.e.,
 // MediaGalleriesPreferences). It shows the dialog and owns itself.
 class MediaGalleriesDialogController {
  public:
   struct Entry {
     Entry(const MediaGalleryPrefInfo& pref_info, bool selected)
@@ skipping 53 matching lines @@
   virtual content::WebContents* WebContents() = 0;
 
  protected:
   MediaGalleriesDialogController();
   virtual ~MediaGalleriesDialogController();
 
   DISALLOW_COPY_AND_ASSIGN(MediaGalleriesDialogController);
 };
 
 #endif  // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_GALLERIES_DIALOG_CONTROLLER_H_